Marium sits next to 4 phonetic neighbors — Mariam, Maryam, and Mary are the closest matches by sound. Most share Marium's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"beloved, wished-for child"
"mountain peak"
"flower; blooming"
"gift of Yahweh"
"noble woman; endurance (from Patricia/Patience)"
"myrtle tree (Hadassah variant)"
"light, illumination"
"elder tree forest"
"good, virtuous, beautiful"
"cliff town"
"star of the sea, beloved"
"noble, of noble kind"
"little bramble; of the thornbush; possibly auburn-hued"
"From Wales; a foreigner or stranger"
"shining glory"
Similar sound: These names share phonetic patterns with Marium — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Egyptian/Coptic origins, giving them the same cultural heritage as Marium.
Rhythm: Marium is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.